SATA vs. SCSI...

[DDR-PIII]

SATA 150: WD RAPTOR - 36GB 10,000RPM - 8MB CACHE, 5.2ms

vs.

SCSI Ultra 320: MAXTOR ATLAS - 36GB 15,000RPM - 8MB CACHE 80pin, 3.2ms

which is better ?

[Vio1]

obviously the scsi..more rpm and better time

[DDR-PIII]

how about if there was one SCSI, and three SATA in RAID 3?

[Xaotic]

On the first question: It depends more on what you are using the drive for. I use SCSI for OS disks due to low latency. I use SCSI for secure storage before backing up data to tape. I use IDE for bulk nonsecure storage. The difference is that the SCSI is configured, by default, to run a CRC on the data as it's written, thus assuring that the information on disk is accurate. IDE does not have this ability as a default. Resulting from this soft errors are higher in IDE storage, usually 1 in 10^8 to 10^9 bit has an error.

SCSI will have disk access time advantages due to faster seeks and less disk latency from higher spindle speeds. A good way to compare is Storage Review's comparison tool.

http://storagereview.com/php/benchmark/compare_rtg_2001.php?typeID=10&testbedID=3&osID=4&raidconfigID=1&numDrives=1&devID_0=232&devID_1=249&devCnt=2

As you can see the SCSI wins out in most areas. The 74GB Raptor is a closer match, but the SCSI still wins.

http://storagereview.com/php/benchmark/compare_rtg_2001.php?typeID=10&testbedID=3&osID=4&raidconfigID=1&numDrives=1&devID_0=232&devID_1=254&devCnt=2

On the second question: Good luck finding a RAID-3 controller for IDE, RAID-5 is easier. RAID will not change the SCSI's primary advantages, and in fact makes many of them more extreme. The RAID will increase the read STR on the array, and make everything else worse. The writes will be bottlenecked by whatever processor is running the array(on hardware RAID) and latencies and access times increase. This would be good for a data storage array, but I'd use single disks for the OS, of either kind, to get better responsiveness.

[DDR-PIII]

k I'll get the 74gb raptor instead, ill be using it to encode music/video, play games, server games serve files etc... :)

[tom10167]

If you can afford it, get the 15k SCSI drive. They are so unbelievably fast.

[DDR-PIII]

*sigh* choices choices...

[stool]

If you are going for a 15k drive, you'll definitely want to go for an active cooling solution. 15k drives do get incredibly hot.